Thomas atris burrows and herman martienssen



(No Model.)

N0. 6%3342 1 PatentgrlAgg. 6, 1895.

W 50. [Men/Z0919:

NITED STATES PATENT Enron.

THOMAS AYRIS BURROWS AND HERMAN MARTIENSSEN, OF J OHANNESBURG, SOUTH AFRICAN BEPUPLIO.

S TAM P- BATTERY.

SPECIFICATION forming part of Letters Patent No. 543,846, dated August 6, 1895.

Application filed July 11, 1892. Serial No. 439.653- (No model.) Patented in South African Republic April 25 1892, No. 362, and in England April 27, 1892,11'0. 7,975.

' To all whom it may concern.-

Be it known that we, THOMAS AYRIS BUR- ROWS, mechanical engineer, and HERMAN MARTIENSSEN, mining engineer, residing at Johannesburg, in the South African Republic, citizens of the South African Republic, have invented certain new and useful Improvements in or Applicable to Stamp-Batteries, (in respect whereof we have applied for a patent in the South African Republic, No.

362, to bear date April 25, 1892, and in Great Britain, No. 7,975, to bear date April 27, 1892, neither patent having yet been obtained,) of which the following is a specification.

This invention appertains to stamp-batteries for crushing gold ore and other substances; and it consists in providing means whereby, without interfering with the removability of any particular stamp, the stems or stamp-rods are enabled to work with great freedom.

In the accompanying drawings, which serve to-illustrate the way'in which we prefer to carry out our invention, Figure 1 is a side ele- 2 5 vation; Fig.2, a corresponding end elevation;

Fig. 3, a plan; Fig. 4, a vertical section through the ball-race; Fig. 5, a side elevation with the upper part of the ball-race raised to expose the balls; Fig. 6, a vertical section through 0 the ball-race, the balls and stamp-rod being removed; and Fig. 7, a side elevation of half the bearing-block. Fig. 8, drawn to a larger scale, is a transverse section through the rings in which the ball-race is formed.

Each bearing or guide for the stems or stamp-rods is constructed in the following manner: Over the stem or stamp-rod A we slip two grooved rings B and B, the groove b, Fig. 6, in one ring facing the groove b in 0 the other. Between the two rings we place a series of antifriction-balls C. The balls project beyond the inner edges of the rings and are in contact with the stem or stamp-rod A. The rings are furnished with flanges b and b and supported by four pieces of wood or'metal D, D, D and D bolted together in the following way: The two upper pieces D and D are fastened together by four horizontal bolts E, E, E and E two on each side of the stem or stamp-rod A, the two lower pieces D and D being similarly bolted together by four bolts E E E and E The upper pieces are united to the lower pieces by four vertical bolts E, E", E and E one near each corner of the block thus built up from the four pieces of wood or metal D, D, D and D Each ring B or B may be in two or more pieces.

The antifriction-balls 0 enable the stems or rods A to work with great freedom. They can be adjusted to take up wear by simply tightening the nuts on the vertical bolts E E E and E. New balls can be readily substituted for worn ones after removing the vertical bolts or their nuts and raising the blocks D and D, as represented in Fig. 5.

The stem or stamp-rod A can be taken out without interfering with the other parts of the battery, after the horizontal bolts or their nuts have been removed.

The rings B and B and antifriction-balls 0, above described, may be fitted to the metal bearings or wooden guide-blocks at present in use.

What we claim, and desire to secure by Letters Patent, is-

1. In a stamp battery, the combination, with a stem or stamp-rod, of two rings surrounding the stem or rod, the opposing faces of the rings being grooved and forming a ballrace, a series of anti-friction balls between the rings, and four supporting pieces bolted together by horizontal and vertical bolts, the horizontal bolts serving to secure the upper and lower pieces respectively to the framework and the vertical bolts to connect the upper and lower pieces and effect adjustment,

substantially as herein set forth.

2. In a stamp -battery, the combination, with a stem or stamp-rod, of two solid grooved rings slipped over the stem or rod, a series of anti-friction balls working in the grooves of the rings, and 'four pieces of wood or metal held together and to the framework by vertical and horizontal bolts, these bolts serving to bring the rings towerd each other to colnpensaid blocks are fastened together, substansate for wear, and enabling the stem or red tiallyas and for the purposes herein set forth. [0

to be readily taken out when required, sub- THOMAS AYRIS BURROWS.

stantially as herein set forth. 5 3. In a stamp-battery, the combination, HERMAN MARTIENSSEN' with a series of anti-friction balls 0 and the Witnesses: two rings 13 and B, of the supporting blocks S. L. KLING, D, D, I) and D and the bolts whereby the D. A. NAPIER. 

